Results 41 to 50 of about 2,576,589 (345)

A Numerical Simulation of Nanodisk Semiconductor-Plasmonic Laser Using BOR-FDTD With a Multilevel Gain Medium Model

open access: yesIEEE Photonics Journal, 2012
A temporal and spatial simulation and design of nanoplasmonic laser based on a semiconductor nanodisk is presented in this paper. A body-of-revolution finite-difference-time-domain (BOR-FDTD) simulation incorporated with a semiclassical multilevel model ...
Qian Wang, Seng Tiong Ho
doaj   +1 more source

Finite-time Synchronization Transmission Technology of Signal based on Semiconductor Laser

open access: yesGuangtongxin yanjiu, 2021
A new method is proposed to solve the problem of finite-time synchronization transmission of signal in the current modulated semiconductor laser. Firstly, the characteristics of current modulated semiconductor laser are analyzed theoretically.
Li-na ZHAO, Qing-tao WEI, Ling Lü
doaj   +3 more sources

Structural Design and Experimental Investigation of a 1.65 µm Tapered Semiconductor Laser with InGaAlAs MQWs (On InP)

open access: yesPhotonics
This paper presents the design and fabrication of a 1.65 μm tapered semiconductor laser based on an InGaAlAs multiple quantum well structure (grown) on InP.
Yuan Feng   +7 more
doaj   +1 more source

Design, Fabrication, and Characterization of Semiconductor Transverse Bragg Resonance Lasers [PDF]

open access: yes, 2007
Controlling the spatial modes of a laser cavity is fundamental for improving the beam quality of a laser and achieving highly efficient coupling of power into an optical system.
Choi, John Myun
core   +1 more source

A 550 W high-brightness and low-SWaP fiber-coupled pump enabled by double-junction diode chips

open access: yesHigh Power Laser Science and Engineering
Fiber-coupled laser pumps with low size, weight and power consumption (SWaP) have become more and more compelling for applications in both industrial and defense applications.
Liping Qiu   +6 more
doaj   +1 more source

DEVELOPMENT OF TRANSMYOCARDIAL LASER REVASCULARIZATION IN PATIENTS WITH ISCHEMIC HEART DISEASE

open access: yesAlʹmanah Kliničeskoj Mediciny, 2016
The use of laser radiation in cardiac surgery allows to provide more effective and targeted care for patients with ischemic heart disease. The article summarizes the multistage teamwork of several research centers in Tomsk on determination of the most ...
V. M. Shipulin   +4 more
doaj   +1 more source

SILICON SURFACE MICROSTRUCTURING BY SINGLE-EXPOSURE FEMTOSECOND DOUBLE LASER PULSE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper evaluates the possibility of periodic microstructures formation on the silicon surface by single-exposure double femtosecond laser pulse. Method.
E. V. Kuzmin   +3 more
doaj   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Semiconductor Laser Spectrometry

open access: yesAnalytical Sciences, 1993
A semiconductor laser is more compact and less expensive than a conventional laser. Therefore, scientists prefer to use this light source in analytical spectroscopy. However, the emitting wavelength of the semiconductor laser is located in the near-infrared or deep-red region. Only a limited number of compounds are fluorescent in these spectral regions;
openaire   +2 more sources

The Complex Way to Laser Diode Spectra: Example of an External Cavity Laser With Strong Optical Feedback [PDF]

open access: yes, 2005
An external cavity laser with strong grating-filtered feedback to an antireflection-coated facet is studied with a time-domain integral equation for the electric field, which reproduces the modes of the oscillation condition as steady-state solutions ...
B. TROMBORG   +4 more
core   +1 more source

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